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Finding the Third Proportional to 13,383 and 20,431.50

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Solution

The third proportional to 13,383 and 20,431.50 is: 31,192.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,383 : 20,431.50 = 20,431.50 : x
  2. Step 2: Convert to fraction form
    13,383/20,431.50 = 20,431.50/x
  3. Step 3: Cross multiply
    13,383x = 20,431.50 × 20,431.50
  4. Step 4: Simplify right side
    13,383x = 417,446,192.25
  5. Step 5: Solve for x
    x = 417,446,192.25/13,383
  6. Step 6: Final answer
    x = 31,192.27

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.